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@ni-.teh toiles strat @fitta HIRAM` K. NEEDI-IM, OF TITSVILLE,PENNSYLVANIA, SSIGNOR` T '-YHIMSELF AD RICHARD E. HEARN, OF SAME PLAGE.I

*heeft Mentira renounced Marca 24, 1868.

IMPROVEMENT IN LAMP-BURNERS.

@Llp gagnait return tu iu tlpst totsttrrsrteut mn mating gaat nt tiptame.

TO LL Wl-IOM I'l MAY CONCERN:

, Be it known that I, IIIRA'MK. NEEDHAM, ofthe city of Titusville,county of Crziwford, and State of Pennsylvania, have inventedyccrtainlnew and useful Improvcmentsin Lamps for burning crude petroleum,dto.; and I do hereby declare that the following is a full, clear,and-exact`description thereof, reference being had to the accompanyingdrawings, which form a part of this specication, and tothe letters ofreference marked thereon.

.l The object of my invention is to so construct a ,flat or curvedwicltlampi-burner that crude petroleum and other yolatle hydrocarbons can beburned vtherein witlrpert'ect safety and complete combustion; and at the.same tir'nc the cost of theV burner shall be such as to bringit withinthe reachof all. To accomplish this, I make nsoioirv two flat or curvedwicks and wicktubes, and in order that the crude particles of the oilshall be drawn upto the flame and entirely consumed, without smoke orunpleasant odor, it is necessary to supply exceedingly strong a\ndsteady currents et" air to both the outer and'vinner surface of thedarne. Due precautions must also be used that the parts of the lampliable vto contact with the oil shall not becomesuiciently heated tocauseV an undue generation of' gas within the lamp, and consequent riskof explosion. The accompanying drawings illustrate -the details of myVinvention'- Figures'l and 2 being vertical cross-sections of lnyburner, and Figure 8 a horizontal section' on line A B. c Itwiil be seenthat the external form of the burner is qui-te similar to the ordinarykerosene-burner, and it isjntendcd to 'be lsubstituteidfor thatv inicommon lamps.` v

arepresents thebody or casing of theburner, a portion o'f which isperforated, to admit air to the outer surface of theiiame throughtbenair-passage b. I use two at wicks, placed within thewick-tubes ec,which tubes I malte curved in t'heir horizontal sectionfsubstantiallyals shown. These wick-tubes are secured to the` lower portion, d, of theburner, which Vis screwed into the collar of the lamp in the usual'manner'. I construct a diaphragm, e, between the casinga 'and lowerpart d, which-diaphragm extends entirely across the burner, with theexception of the space between the wick-tubes. A 'portion of thediaphragm e also extends upwards to the ltop ofthe wick-tubes, andconnects`their edges solidly togethem'as shown. An air-passagmff, isleft under the diaphragm, communicating with the external air. Thispassage may be open at'the sides, as shown,`\or provided with aperforated easing. The wick-tubes ,are brought nearly together attheirtops, and united at their edges, as shown, for the purpose of'contractingand quiekening the current of air passing upwardsbetweetthei'n.

The effect produced isasfollows: Th'e'tlam'cs from' the two wicks uniteat their edges, ahd, by meansof the diaphragm e,.two distinct andseparate air-passages, b and are formed,.the former supplying air to theouter and the latterto 'the inner surfaces of the ame. Alcune, g, isprovided, modified to suit the peculiar form of flame. i

By the above-described arrangement, obtain a perfect combustion of crudepetroleum, at a slight cost as compared with refinedroils, while a nuchAincre intense -light is produced. The lower portion ofthe burner cannotbecome heated, being protected by the constant current of' cool air.passing through the space f. The wicks may he raised simultaneously bymeans of the two sets ol toothed wheels geared together, so that b'othmay be operated from one-projecting shaft, as shown. In the drawings,the direction Aof thc air vsupplying the outer i and inner surfaces ofthe ilarne is indicated by red arrows.

I dofnot claimv broadly the use of two dat or curved wick-tuhes, norvthe supplying of uir to the interior of the 'flame,'-e`xcept und'crthemode of construction set forth; but v What I`clai'r`n as my specificinvention, and desire to secure by Letters Patent, isl The describedorrangementand Vcombination of the wickftubes c c, basefplatc cl, anddiaphragm e, the latter extending upwards, and connecting the edgesofthe wick-tubes,so as to form separate and distinct internal and iexternal"air-passages f and-bj,` as. shown,and thewhole so constructedthat it may be appliedto an ordinaryV lamp-collar,substantiallyas andfor the purposes set' forth.`

Dated at Titusville,Pennsylvania, this 29th day of July, A. D. 1867.

' y y H.: K. NEEDHAM,

Witnesses p ANDREW B. Heumann, M. W.1.P0Nn, Jr.

